Is this the motherboard burned or some other reason

There is a possibility that the memory is not compatible, just try it with one. My classmate also had this situation, he has two 1g, and the model is the same, but it doesn't work to plug in two, and you can plug in one, which is really puzzling. Also check the interface of your hard drive.

Let's try it like this.

First of all, take away all the motherboards, except for the memory and CPU, plug the memory back in, and turn on the computer.

The memory is unplugged, and there is still no BIOS alarm sound, indicating that the POST self-test cannot detect the memory at all, and it is stuck directly in front, this fault needs to be detected with a motherboard detection card, depending on the power supply, reset and other motherboard circuits. Of course, if you just want to detect whether the motherboard is broken, you can remove the CPU and replug it, and then turn it on, if it still can't be used, then touch the CPU and the temperature of the north and south bridges, if there is no temperature, it means that it is not working, and you can go directly to repair the motherboard.

It is estimated that 89 out of ten is that the motherboard is broken, first see if the power supply fan is moving, determine the power supply, and then see if the indicator light on the motherboard is on, or remove it to see if the capacitor on the motherboard is burned out.

Isn't the fan also turning, repair the motherboard. I have experienced similar symptoms.

1. Reasons for the incoming components: The quality of the chips and other components on the motherboard is not good, resulting in aging and damage to the motherboard, resulting in the failure of the motherboard.

2. Human reasons: When using the computer, hot-swap the hardware at will or touch various connectors with metal objects indiscriminately, resulting in the failure of the motherboard.

3. Dust and static electricity causes: due to dust or static electricity, the motherboard is in poor contact, short circuit or burns the chips on the motherboard, resulting in the failure of the motherboard.

4. Causes of poor contact: due to rust, oxidation, weakened elasticity, soldering, broken pins, etc., various chips, sockets, and interfaces in the motherboard are not in good contact, resulting in motherboard failure.

The reason for the burning of the main board of the computer.

There are many, and the main causes are the following reasons: 1Component aging. 2.

Sudden changes in the current of the DAO electric current lead to the burnout of the original device, breakdown. 3.Short circuits caused by water, debris, and small insects can burn out.

4.High load for long periods of time. 5.

The impact causes loose solder legs, broken motherboards, deformed interfaces, bad sectors of hard disks, etc.

Caused by a short circuit in the motherboard, caused by unstable power supply, and there is also a high possibility of burning the motherboard if you turn on the graphics card or memory when you turn it on.

Then who knows, it may be caused by the fan heat dissipation, which is the most likely cause, but it may also be a problem with your power supply, and the unstable current can cause the original to break down, all of which are possible.

This kind of question is not much different from not saying it. To know the reason, it depends on the actual thing.

There are many reasons why a computer motherboard burns.

The first type: you can simply take a bucket of water while the computer is running, open the case and pour the water into it, and the motherboard will burn.

The second type: change to a worse wind dissipation.,The computer is on 24 hours a day.,CPU wait until 100 then it burns.。。

The motherboard may burn a lot, in fact, sometimes it's just pure bad luck, the first computer I configured in 2001, the motherboard is MSI, it's a good board, but it burned after two months, I can't find the reason, there are obvious burns that didn't matter before, but now it can be repaired, it's a long time!

If you don't have the hands-on skills, don't mess around.

Wait a minute, I won't give you a warranty.

If the motherboard is burned, it will paste off and have a burning smell.

It's just that the chicken box light doesn't light up, the fan on the motherboard doesn't reflect, and the power supply doesn't light up, which needs to be further diagnosed, and it is recommended to use a diagnostic card.

If the motherboard is burned, there will be no self-test, and there will be no signal output.

You might also be running out of power.

Since it is Lenovo's brand machine, let's see if it is still within the warranty period** They are prescribed, they will not ask for more, but it is not cheap, you mainly let them detect what the problem is, if you feel that the maintenance cost is high, you can also buy accessories for maintenance.

If you look closely, when your computer is turned on, does the power fan turn first and then stops? If this is the case, it is most likely caused by a short circuit in the motherboard. The power supply generally has a protection circuit, and if the motherboard is short-circuited, the power supply will be automatically cut off.

If the power supply fan does not move at all, check your power cord, if the power cord is fine, it may be a power supply problem.

**It's hard to say, some motherboards are more expensive to repair than buying a piece of second-hand goods that can be used, so they have no value. Small problems, generally 20 starts, such as changing a few capacitors, or something, if you change the chip, there is no need to repair it, and the power supply also depends on the power of more than 200w, more than 100 points, and the big 4 500w is more expensive, and 3 4 hundreds of thousands of Lenovo don't need money during the warranty period.

It may also be that the power supply is broken, this kind of problem or don't break it yourself, take it out to find a repair computer with a test card to know.